品牌
生产厂家厂商性质
上海市所在地
| 壳体 | 密封 | ||||
| H71H-16Q | 1.6 | 2.4 | 1.76 | ≤PREFIX = ST1235℃ | 水、蒸气、油品等 |
| H71H-25Q | 2.5 | 3.75 | 2.75 | ≤235℃ | |
| H71W-25H | ≤300℃ | ||||
| H71W-25P | ≤200℃ | 硝酸等腐蚀性介质 | |||
| H71W-40H | 4.0 | 6.0 | 4.4 | ≤300℃ | |
| H71W-40P | ≤200℃ | 水、蒸气 |
三、H71H（W）对夹升降式止回阀主要零件材料
| 型号 | 阀门 | 阀瓣 | 弹簧 |
| H71H-16Q H71H-25Q | QT400-15 | 25 | 50CrVA |
| H71W-25H H71W-40H | 2Cr13 | 1Cr13 | 1Cr18Ni9 |
| H71W-25P H71W-40P | ZG1Cr18Ni9Ti | 1Cr18Ni9Ti | 1Cr18Ni9Ti |
四、H71H（W）对夹升降式止回阀主要外形尺寸
| 公称通径 | L | D | 公称通径 | L | D | ||||
| 1.6 | 2.5 | 4.0 | 1.6 | 2.5 | 4.0 | ||||
| 15 | 25 | 48 | 48 | 48 | 80 | 71 | 140 | 140 | 140 |
| 20 | 31.5 | 58 | 58 | 58 | 100 | 80 | 160 | 165 | 165 |
| 25 | 35.5 | 68 | 68 | 68 | 125 | 110 | 190 | 195 | 195 |
| 32 | 40 | 80 | 80 | 870 | 150 | 125 | 215 | 225 | 225 |
| 40 | 45 | 90 | 90 | 90 | 200 | 160 | 270 | 285 | 390 |
| 50 | 56 | 105 | 105 | 105 | 250 | 200 | 330 | 340 | 350 |
| 65 | 63 | 125 | 125 | 125 | |||||
